Quote:
Originally Posted by 32valvesftw
I use Mobil 1 High Mileage 10 W 30 and do oil testing with Blackstone labs, so far my numbers are excellent even when I went 8000 between changes. For what is worth my zinc levels were 870ppm. I am not seeing any noticeable wear or problems based on the results. I use about a quart in 4000 miles if I go that long between changes. Seems to like the Mobil 1 is OK.
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While all of us have thoughts, opinions, ideas, suspicions, beliefs, etc.
this particular post presents facts derived from actual used oil testing.
The facts presented show no indication of the sky falling.
Yes, the oil formulations have changed continuously since 1975 when Mobil 1 was introduced. Not only has ZDDP been reduced, but other newer additives have also been developed and are incorporated into the current formulation.
It has also been correctly pointed out that "overdosing" ZDDP will indeed result in severe engine damage. After learning that years ago on another forum, I gave up any thought of trying to "concoct" some formula on my own.
Everyone has their own conviction, but Mobil 1 has been time tested in many diverse applications and severe conditions with very little if any factual documentation of it contributing to engine component failures.
If such factual evidence exists, we all, I am sure, would certainly want to see same, so please present if it exists.
Marty